Two-in-one structure of self-standing reaction tower and flue for SDS (sodium dodecyl sulfate) dry desulfurization
By adopting a two-in-one structure of self-relay reaction tower and flue in an environment with limited space, the problem of insufficient flue gas residence time and flow field uniformity in the SDS dry desulfurization system is solved, and efficient desulfurization effect and space saving are achieved.
Patent Information
- Application Number
- CN202421566947.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The SDS dry desulfurization system is difficult to meet the needs of flue gas residence time and flow field uniformity in an environment with limited space, resulting in insufficient reaction time between the desulfurizer and the flue gas, affecting the desulfurization efficiency.
The self-standing reaction tower and flue are adopted, and the foundation is directly connected through anchor bolts, the support structure is cancelled, the reaction tower and flue are combined into a reaction column, and the height of the reaction column is increased to extend the flue gas reaction residence time.
It significantly reduces the floor area, meets the time requirement for the full mixing of desulfurizer and flue gas, improves the desulfurization efficiency, and simplifies the structural design.
Smart Images
Figure CN222752964U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of environmentally friendly desulfurization, in particular to a self-supporting reaction tower and flue two-in-one structure for SDS dry desulfurization. Background Art
[0002] The core of the SDS dry desulfurization process is to use powdered activated calcium or sodium bicarbonate as a desulfurizer to capture sulfur dioxide (SO2) in the flue gas under high temperature conditions, convert it into calcium sulfate or sodium sulfate, and finally capture and remove it by the dust collector. In order to achieve the desulfurization effect, it is usually necessary to set up a special reaction tower to allow the desulfurizer and flue gas to fully contact and react. In this link, the mixing time of the desulfurizer and the flue gas and the uniformity of the flow field are crucial, which directly affects the desulfurization effect. In theory, extending the mixing time and ensuring a uniform flow field can significantly improve the desulfurization efficiency. Therefore, the design layout and size of the reaction tower and its inlet and outlet flues become key factors in determining the desulfurization performance.
[0003] However, in practical applications, since the SDS desulfurization system is often located at the end of the unit or system and is strictly limited by the site space, it is difficult to achieve the ideal layout and size of the reaction tower and flue, and cannot meet the residence time of the flue gas and the uniformity of the flow field, resulting in insufficient reaction time between the desulfurizer and the flue gas, affecting the desulfurization efficiency. Specifically, in order to ensure that the flue gas can be fully mixed and evenly before entering the reaction tower, the inlet flue of the reaction tower not only needs a certain length to provide the necessary mixing time, but also its cross-sectional shape (preferably circular or rectangular) and size have a direct impact on the mixing effect. In the traditional solution, the total length of the flue may need to reach tens of meters. Combined with the volume of the reaction tower itself and the necessary supporting structures (such as brackets, supports, etc.), the entire system occupies a large area, which is undoubtedly a major challenge in an environment with limited space.
[0004] What is more complicated is that after desulfurization, dust removal needs to be arranged, and the reaction tower needs to be placed between the dust collector and heat exchanger and other equipment. The crowdedness of the site further exacerbates the problem. The reaction tower not only needs to share limited space with surrounding equipment, but also needs to ensure that the desulfurizer and flue gas have sufficient contact time, which becomes extremely difficult in actual operation and cannot meet the time requirement for the desulfurizer and flue gas to be fully mixed.
[0005] In addition, considering the safety and stability of the reaction tower and its supporting structure, especially in areas with high seismic intensity, the entire support system must not only bear the weight of the reaction tower, but also consider the impact of seismic loads. This requires the support itself to be equipped with more complete support, thus taking up more space. Figure 1It is a conventional reaction tower overall structure, which includes a reaction tower 1 and a reaction tower support 2. The bottom of the reaction tower 1 is connected to a reaction tower inlet flue 3. A guide plate and a rectifier are required to be arranged at the inlet of the reaction tower 1 to ensure the uniformity of the flow field.
[0006] In summary, although SDS dry desulfurization technology provides an efficient desulfurization solution in theory, in actual deployment, site limitations and high space requirements have become the main obstacles restricting its performance. Especially in an environment with limited space, how to reasonably plan the layout of the reaction tower and flue to ensure sufficient mixing of the desulfurizer and the flue gas has become an urgent problem to be solved. Utility Model Content
[0007] The utility model aims to provide a self-supporting reaction tower and flue two-in-one structure for SDS dry desulfurization, so as to solve the problems in the prior art that the flue length is insufficient due to site space limitations, resulting in insufficient reaction time between the desulfurizer and the flue gas, affecting the desulfurization efficiency, the reaction tower bracket arrangement space is limited, and guide plates need to be set inside the flue and the reaction tower to optimize the flow field.
[0008] The utility model is realized by adopting the following technical solutions:
[0009] The utility model provides a self-supporting reaction tower and flue two-in-one structure for SDS dry desulfurization, comprising a reaction column, wherein the reaction column adopts a self-supporting structure, the interior of the reaction column is hollow, a flue gas inlet is arranged at the lower part of one side of the reaction column, a flue gas outlet is arranged at the upper part of the other side of the reaction column, the cross section of the reaction column is a symmetrical cross section, and the bottom of the reaction column is fixedly connected to a foundation.
[0010] The above structure can not only meet the mixing time requirement of the desulfurizer and the flue gas, save layout space, but also achieve high desulfurization efficiency.
[0011] As the preferred technical solution:
[0012] A ring plate is provided at the lower part of the reaction column, the ring plate is sleeved on the outside of the reaction column, and the inner side of the ring plate is fixedly connected to the four sides of the reaction column;
[0013] A plurality of waist-shaped holes are spaced apart on the ring plate, a connecting piece is provided between the base and the ring plate, the lower end of the connecting piece is fixedly connected to the base, and the upper end of the connecting piece passes through the waist-shaped hole and is connected to a limiting plate.
[0014] As the preferred technical solution:
[0015] The waist-shaped holes are arranged on the edge of the ring plate.
[0016] As the preferred technical solution:
[0017] The connecting piece is an anchor bolt.
[0018] As the preferred technical solution:
[0019] The limiting plate is attached to the upper surface of the ring plate, and the connecting member and the limiting plate cooperate to fix the reaction column on the foundation.
[0020] As the preferred technical solution:
[0021] The length direction of the waist-shaped hole is the same as the radius direction of the location of the waist-shaped hole on the ring plate.
[0022] As the preferred technical solution:
[0023] Stiffening ribs are also provided on both sides of the waist-shaped hole, and the stiffening ribs are fixedly connected to the ring plate and the reaction column.
[0024] As the preferred technical solution:
[0025] The cross section of the reaction column is circular, square, rectangular or diamond-shaped.
[0026] As the preferred technical solution:
[0027] The reaction column is a steel body.
[0028] As the preferred technical solution:
[0029] The reaction column is formed into a cylindrical or square cylindrical shape by a steel plate.
[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0031] 1. The utility model combines the traditional reaction tower and flue into one structure, namely the reaction column, which is directly connected to the foundation through anchor bolts, and does not need to set up supporting structures such as flue brackets and reaction tower brackets. While simplifying the structure, it reduces the space occupied by the supporting structure and reduces the layout space. At present, the space occupied by the utility model is only the cross-sectional size of the reaction column, which significantly reduces the floor space. In addition, the support structure is eliminated, and the height of the reaction column can be increased. Increasing the height under the same layout conditions is equivalent to extending the residence time of the flue gas reaction, achieving the purpose of meeting the process requirements in a limited site, and being able to adapt to the limitations of the site and the high demand for space;
[0032] 2. The reaction column in the utility model adopts a self-supporting structure, and its height can be customized. The reaction time requirement of the desulfurizer and the flue gas can be compensated in the height direction. The cross-sectional size and height of the two-in-one structure of the utility model can be determined according to the reaction time requirement of the desulfurizer to ensure the mixing time requirement of the desulfurizer and the flue gas, which solves the problem in the prior art that the flue length is insufficient due to the space limitation of the site, resulting in insufficient reaction time between the desulfurizer and the flue gas, thus affecting the desulfurization efficiency;
[0033] 3. The reaction column in the utility model is hollow inside and is in the form of an empty tower. There is no truss pipe inside, which reduces resistance, optimizes the flow field, and is more conducive to improving the desulfurization efficiency;
[0034] 4. The cross section of the reaction column in the utility model adopts a symmetrical cross section, which makes the flow field more uniform, the mixing effect is better, and it is more conducive to the desulfurization reaction, without the need to set up additional guide plates and rectifiers;
[0035] 5. The reaction column in the utility model adopts a self-supporting structure. The self-supporting structure is calculated as a whole. The reaction column transmits force to the foundation through anchor bolts, which not only stabilizes the structure but also makes full use of the site.
[0036] 6. The reaction column in the utility model is provided with a ring plate, and the ring plate is provided with a waist-shaped hole, which solves the problem of inconsistent expansion between the reaction column and the foundation;
[0037] 7. The utility model has a simple structure, saves space, and has a uniform flow field, which ensures the operation effect of the desulfurization system. It occupies a small area, has a simple structure, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] Figure 1 Schematic diagram of the overall structure of a conventional reaction tower.
[0039] Figure 2 It is a structural schematic diagram of the two-in-one structure of a self-supporting reaction tower and a flue for SDS dry desulfurization described in the utility model.
[0040] Figure 3 It is a schematic diagram of a circular cross section of a reaction column according to the present invention.
[0041] Figure 4 It is a schematic diagram of a square cross section of the reaction column described in the present utility model.
[0042] Figure 5 It is a bottom schematic diagram of the self-supporting reaction tower and flue two-in-one structure of the SDS dry desulfurization described in the utility model.
[0043] Figure 6 It is a connection schematic diagram of the anchor bolts described in the utility model.
[0044] Figure 7 It is a flow field cloud diagram of the self-supporting reaction tower and flue two-in-one structure using the SDS dry desulfurization described in the utility model.
[0045] Icons: 1-reaction tower, 2-reaction tower bracket, 3-reaction tower inlet flue, 4-reaction column, 5-smoke inlet, 6-smoke outlet, 7-ring plate, 8-waist-shaped hole, 9-anchor bolt, 10-limiting plate, 11-stiffening rib plate. DETAILED DESCRIPTION
[0046] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0047] Example 1
[0048] like Figure 2-Figure 6 As shown, this embodiment proposes a self-supporting reaction tower and flue two-in-one structure for SDS dry desulfurization, including a reaction column 4. The reaction column 4 adopts a self-supporting structure. The interior of the reaction column 4 is hollow and is in the form of an empty tower. A flue gas inlet 5 is provided at the lower part of one side of the reaction column 4, and a flue gas outlet 6 is provided at the upper part of the other side of the reaction column 4.
[0049] The cross section of the reaction column 4 is a symmetrical cross section, such as a circle, a square, a rectangle, a diamond, etc., which is beneficial to improving the flue gas mixing effect.
[0050] The reaction column 4 is a steel body, and its bottom is fixedly connected to the foundation. Specifically, a ring plate 7 is provided at the lower part of the reaction column 4, and the ring plate 7 is sleeved on the outside of the reaction column 4, and the inner side of the ring plate 7 is fixedly connected to the surrounding of the reaction column 4. Figure 6 As shown, a plurality of waist-shaped holes 8 are provided at intervals on the edge of the ring plate 7. Figure 6 The waist-shaped hole 8 is shown in perspective, and an anchor bolt 9 is arranged between the foundation and the ring plate 7. The lower end of the anchor bolt 9 is pre-buried in the foundation, and the upper end of the anchor bolt 9 passes through the waist-shaped hole 8 and is connected to a limiting plate 10. The limiting plate 10 is attached to the upper surface of the ring plate 7. The anchor bolt 9 and the limiting plate 10 cooperate to fix the reaction column 4 on the foundation, and limit the reaction column 4 in the vertical direction.
[0051] The length direction of the waist-shaped hole 8 is the same as the radius direction of the location of the waist-shaped hole 8 on the ring plate 7, so as to accommodate the expansion difference between the reaction column 4 and the foundation.
[0052] Stiffening ribs 11 are further provided on both sides of the waist-shaped hole 8 , and the stiffening ribs 11 are fixedly connected to the ring plate 7 and the reaction column 4 .
[0053] In this embodiment, the reaction column 4 is formed of a cylindrical or square cylinder using thin-walled steel plates. The thickness of the steel plates is determined according to calculation and analysis. There is no truss pipe inside the reaction column 4. Compared with conventional flues, the lack of trusses inside reduces resistance, optimizes the flow field, and is more conducive to improving desulfurization efficiency.
[0054] The utility model combines the traditional reaction tower and flue into one structure, namely the reaction column 4. The reaction column 4 is directly connected to the foundation by anchor bolts 9, and there is no need to set supporting structures such as flue brackets and reaction tower brackets. While simplifying the structure, it reduces the space occupied by the supporting structure and reduces the layout space. At present, the space occupied by the utility model is only the cross-sectional size of the reaction column 4, which significantly reduces the floor area and cancels the supporting structure. The height of the reaction column 4 can be increased. Under the same layout conditions, increasing the height is equivalent to extending the residence time of the flue gas reaction, achieving the purpose of meeting the process requirements in a limited space, and can adapt to the limitations of the site and the high demand for space; the reaction column 4 in the utility model adopts a self-supporting structure, and its height can be customized. The reaction time requirements of the desulfurizer and the flue gas can be compensated in the height direction. The cross-sectional size and height of the two-in-one structure of the utility model can be determined according to the reaction time requirements of the desulfurizer to ensure the mixing time requirements of the desulfurizer and the flue gas, which solves the existing technology During the operation, the flue length was insufficient due to the limitation of the site space, resulting in insufficient reaction time between the desulfurizer and the flue gas, affecting the desulfurization efficiency; the reaction column 4 in the utility model is hollow inside and is in the form of an empty tower. There is no truss pipe inside, which reduces the resistance, optimizes the flow field, and is more conducive to improving the desulfurization efficiency; the cross-section of the reaction column 4 in the utility model adopts a symmetrical cross-section, which makes the flow field more uniform, the mixing effect is better, and it is more conducive to the desulfurization reaction, without the need to additionally set up guide plates and rectifiers; the reaction column 4 in the utility model adopts a self-supporting structure, and the self-supporting structure is calculated as a whole. The reaction column 4 transmits force to the foundation through anchor bolts 9, which is not only structurally stable, but also fully utilizes the site; the reaction column 4 in the utility model is provided with a ring plate 7, and the ring plate 7 is provided with a waist-shaped hole 8, which solves the problem of inconsistent expansion between the reaction column 4 and the foundation; the structural form of the utility model is simple, space-saving, and the flow field is uniform, which ensures the operation effect of the desulfurization system, occupies a small area, has a simple structure, and is highly practical.
[0055] like Figure 7As shown, the flow field in the two-in-one structure of the self-supporting reaction tower and flue of the SDS dry desulfurization described in the utility model is uniform, the mixing effect is good, the desulfurization efficiency is high, and the effect is good.
[0056] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A self-supporting reaction tower and flue two-in-one structure for SDS dry desulfurization, characterized in that: It includes a reaction column, which adopts a self-supporting structure. The interior of the reaction column is hollow, a smoke inlet is arranged at the lower part of one side of the reaction column, a smoke outlet is arranged at the upper part of the other side of the reaction column, the cross section of the reaction column is a symmetrical cross section, and the bottom of the reaction column is fixedly connected to the foundation.
2. The self-supporting reaction tower and flue two-in-one structure of SDS dry desulfurization according to claim 1 is characterized by: A ring plate is provided at the lower part of the reaction column, the ring plate is sleeved on the outside of the reaction column, and the inner side of the ring plate is fixedly connected to the four sides of the reaction column; A plurality of waist-shaped holes are spaced apart on the ring plate, a connecting piece is provided between the base and the ring plate, the lower end of the connecting piece is fixedly connected to the base, and the upper end of the connecting piece passes through the waist-shaped hole and is connected to a limiting plate.
3. The self-supporting reaction tower and flue two-in-one structure of SDS dry desulfurization according to claim 2 is characterized by: The waist-shaped holes are arranged on the edge of the ring plate.
4. The self-supporting reaction tower and flue two-in-one structure of SDS dry desulfurization according to claim 2 is characterized by: The connecting piece is an anchor bolt.
5. The self-supporting reaction tower and flue two-in-one structure of SDS dry desulfurization according to claim 2 is characterized by: The limiting plate is attached to the upper surface of the ring plate, and the connecting member and the limiting plate cooperate to fix the reaction column on the foundation.
6. The self-supporting reaction tower and flue two-in-one structure for SDS dry desulfurization according to claim 2 is characterized by: The length direction of the waist-shaped hole is the same as the radius direction of the location of the waist-shaped hole on the ring plate.
7. The self-supporting reaction tower and flue two-in-one structure for SDS dry desulfurization according to claim 2 is characterized by: Stiffening ribs are also provided on both sides of the waist-shaped hole, and the stiffening ribs are fixedly connected to the ring plate and the reaction column.
8. The self-supporting reaction tower and flue two-in-one structure for SDS dry desulfurization according to claim 1 is characterized by: The cross section of the reaction column is circular, square, rectangular or diamond-shaped.
9. The self-supporting reaction tower and flue two-in-one structure for SDS dry desulfurization according to claim 1 is characterized by: The reaction column is a steel body.
10. The self-supporting reaction tower and flue two-in-one structure for SDS dry desulfurization according to claim 9 is characterized in that: The reaction column is formed into a cylindrical or square cylindrical shape by a steel plate.